It is the third agreement signed for supply of LNG from the NWS Venture's expansion project that is currently under way at the venture's onshore gas plant on the Burrup Peninsula.
The expansion includes a fourth LNG processing train with a production capacity of 4.2 million tonnes per annum of LNG and a second trunkline that will link the venture's offshore production and onshore gas processing facilities.
Kyushu Electric is Japan's fourth-largest power utility and seventh-largest consumer of LNG, currently using about 2.5 mtpa.
The NWS partners have so far concluded sales and purchase agreements with Tokyo Gas, Toho Gas, Osaka Gas while a Letter of Intent has been signed with Tohoku Electric. Key agreements have also been signed with Chubu Electric and Shell Gas & Power.
Woodside said negotiations are continuing with other Japanese customers and agreements for further LNG sales are expected to be concluded in the near future.